Don't check licenses in chrome/common/extensions/docs/server2/third_party.

tools/checklicenses/checklicenses.py

Index: tools/checklicenses/checklicenses.py
diff --git a/tools/checklicenses/checklicenses.py b/tools/checklicenses/checklicenses.py
index ff8792da68401443710a836978ecb7bce7b715bc..daad8ebd857bc98dde20de074aabab36eaac9302 100755
--- a/tools/checklicenses/checklicenses.py
+++ b/tools/checklicenses/checklicenses.py
@@ -114,6 +114,12 @@ PATH_SPECIFIC_WHITELISTED_LICENSES = {
     'chrome/common/extensions/docs/examples': [  # http://crbug.com/98092
         'UNKNOWN',
     ],
+    # This contains files copied from elsewhere from the tree. Since the copied
+    # directories might have suppressions below (like simplejson), whitelist the
+    # whole directory. This is also not shipped code.
+    'chrome/common/extensions/docs/server2/third_party': [
+        'UNKNOWN',
+    ],
     'courgette/third_party/bsdiff_create.cc': [  # http://crbug.com/98095
         'UNKNOWN',
     ],